Type-writing machine.



Ratented Iuly 2, I90l.

W. ,I. BARRON.

TYPE WRITING MACHINE.

(Application filed Km. #2, 1901.

(No Model.)

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UNITED STATES PATENT OFFICE;

\VALTER J. BARRON, OF BROOKLYN, NEW YORK, ASSIGNOR TO DENSMORETYPEWRITER COMPANY, OF SYRACUSE, NElV YORK.

TYPE-WR|T|NG MACHINE.

SPECIFICATION formingpart of Letters Patent N 0. 677,623, dated July 2,1901.

Application filed March 22, 1901. Serial No. 52,284. (No model.)

To all whom. it may concern:

Be it known that I, WVALTER J. BARRON, a citizen of the United States,and a resident of the borough of Brooklyn, city of New York, in

the county of Kings and State of New York,

have invented certain new and useful Improvements in Type JVritingMachines, of which the following is a specification.

This invention relates to the type actions of IO writing-machines; andthe object thereof is to prevent rebounding of the type-bars uponstriking the rest or basket as they return from the platen, so as toavoid clashing of the bars, and hence permit a higher speed ofoperation.

[5 To this end myinvention consistsin certain features of constructionand combinations of devices, all as will be fully hereinafter set forth,and particularly pointed out in the concluding claims.

In the accompanying drawings, Figure 1 is a central vertical section,taken longitudinally, of a Densmore type-writing machine and showing myimprovements applied thereto. Fig. 2 is a detail view illustrating themanner of preventing excessive rebound of the type-bar.

In the views similar parts are designated by similar characters ofreference and portions of the machine not necessary to the invention areomitted.

The framework of the machine includes a top plate or ring 1, upon whichare fastened radial hangers 2, in which are pivoted typebars 3. Thelatter are operated by levers 4,

also pivoted in the hangers 2, and connected by links 5 to levers 6,which are pivoted at their rear ends upon a fulcrum-rod 7and provided attheir forward ends with keys 8. These key-levers are provided withliftingsprings 9, and their forward portions bear up normally against atransverse stop bar or pad 10. Each lever 4 engages its type-bar by aneye l1,which is bent at about right angles to the body of the lever. Thepivot of the lat- 43 ter is lower than the type-bar pivot and moreremote from the platen 12. The type-bars normally rest against a paddedring or basket 13, which is suspended by arms 14 from the top plate 1.The parts thus far described are in common use upon said Densmoremachine, in the operation of which a key 8 is depressed, thereby forcingdown the lever 6 and through thelink 5 swinging the radial lever 4,which swings the type-bar up to the platen. The lever and type-bar swingin difierent arcs, and hence the eye 11 slides along the typebar, sothatthe distance from said eye to the pivot of the type bar is considerablyless when. the latter is in printing position, as shown in dotted linesat Fig. 1', than when it is in normal position.

In the inner edge of each type-bar I cut a stop-notch 15, which when theparts are in normal position stands in register with the eye 11. Whenthe type-bar is operated-by pressure upon the finger-key 8, this notch15 performs no function, since the eye engages the outer edge of thetype-bar and forces the latter upwardly without meeting any obstruc- 7otion; but if a type-bar should rebound after striking the basket 13 uponits return stroke the inner end of the eye 11 catches the notch 15,thereby preventing the eye from sliding along the type-bar, and hencebrings the type-bar to a full stop, as at Fig. 2, before the latter hasmoved far enough away from normal position to be in the-path of asubsequently-operated type-bar.

It will be understood that upon the return of the parts, to normalposition there is no tendency of the lever 4 to rebound, but, on thecontrary, said lover remains stationary when the type-bar starts torebound, and hence is enabled to effectively cooperate with thestop-notch 15. If desired, however, the parts may be so adjusted thatnormally the eye 11 engages the notch 15, as shown at the left ofFig. 1. In this case there would be a slight lost motion at the initialportion of each key-stroke during the movement of the eye out of thenotch and before the actuation of the type-bar by said eye.

It will be seen that the actuator 4 directly engages the type-operatinglever or bar 3, said bar and actuator moving in different paths andcooperating to lock the bar against undue independent movement fromnormal position or such movement as would permit the type to clash withother types, that the too actuating-lever 4 is pivoted eccentrically ofthe type-bar and engages the latter at the obstruction formedby cuttinga notch in the edge of the type-bar, it being understood, of course,that only the upper end of the notch is called into use and that thetype-bar may be made plain or straight from said upper end or jog downto the type-socket, as illustrated at a, Fig.2, that the type-bar ispivoted between the radial leveraandthe printing-center, that the parts3 and at, which are arranged intermediate the type 16 and the key 8,cooperate to form a lock for preventing undue rebound of the type, and,further, cooperate to communicate the movement of the key to the type,and in one form of the invention that the eye 11 is normally seated inthe depression 15, and that at the movement of the key the eye is movedout of said depression and thereafteractnates the type-bar.

Various changes may be made within the scope of the invention.

What I claim as new, and desire to secure I stop 10.

by Letters Patent, is-

1. In a type-writing machine, the combination of a pivoted type-bar, anobstruction thereon, and a key-operated lever pivoted eccentrically ofsaid type-bar and engaging the same at said obstruction so as to lockthe type-bar.

2. In a type-writing machine, the combination of a type, a key,means,including two levers, for transmitting the movement of the key tothe type, said levers having a sliding engagement, and an obstructionupon one of said levers for codperating with the other of said levers tolock the type.

3. In a type-Writing machine, the combination'of a type-bar, akey-operated lever engaging said type-bar,and an obstruction upon thetype-bar for cooperating with said lever to lock the type-bar.

4. In a type-writing machine, the combination of a type-bar, anobstruction thereon, and an actuating-lever provided with an eye whichengages said type-bar and is also arranged to cooperate with saidobstruction to lock the type-bar.

5. In a type-writingmachine, the comhina-' tion of a type-bar having anotch, an actuating-lever having an angularly-arranged eye which engagessaid type-bar in register with said notch, and a key 'for operating saidlever.

6. In a type-writing machine, the combination of a platen, a radialpivoted lever, a typebar pivoted between the said lever and theprinting-center, an eye upon said lever for engaging the type-bar, andan obstruction upon said type-bar at said eye.

7. In a type-Writing machine, the combination of a platen, type-bar 3having an obstruction thereon, lever 4 having an eye for engaging saidtype-bar and said obstruction, keylever 6 connected to said lever 4,spring 9, and

. 8. In a type-writing machine, the combination of a type-bar having anotch or depression, an actuating-lever 4 having an eye normally seatedin said depression, and a key for moving the eye out of the depressionand causing the eye to actuate the type-bar.

